[email protected] (Niels Möller) writes:
> Maamoun TK <[email protected]> writes:
>
>> I made a merge request in the main repo that enables optimized GHASH on
>> AArch64 architecture.
>
> Nice! I've had a quick first look. For the organization, I think aarch64
> assembly should go in it's own directory, arm64/, like it's done for x86
> and sparc.
I've made a new branch "arm64" with the configure changes. If you think
that looks ok, can you add your new ghash code on top of that?
(I'd like to make a similar branch for S390x. It would be good to also
get S390x into the ci system, before adding s390x-specific assembly. I
hope that should be easy to do with the same cross setup as for arm,
arm64, mips, etc).
> I wonder which assembly files we should use if target host is aarch64,
> but ABI=32? I guess the arm/v6/ code can be used unconditionally. Can
> we also use arm/neon/ code unconditionally?
The reference manual says
Armv8 can support the following levels of support for Advanced SIMD and
floating-point instructions:
* Full SIMD and floating-point support without exception trapping.
* Full SIMD and floating-point support with exception trapping.
* No floating-point or SIMD support. This option is licensed only for
implementations targeting specialized markets.
As far as I understand, that means Neon should be always available, in
both 32-bit and 64-bit mode.
Regards,
/Niels
--
Niels Möller. PGP-encrypted email is preferred. Keyid 368C6677.
Internet email is subject to wholesale government surveillance.
_______________________________________________
nettle-bugs mailing list
[email protected]
http://lists.lysator.liu.se/mailman/listinfo/nettle-bugs
